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<div class="header">
  <div class="summary">
<a href="#func-members">Functions</a> &#124;
<a href="#var-members">Variables</a>  </div>
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<div class="title">hal_linux_i2c_userspace.c File Reference</div>  </div>
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<p>ATCA Hardware abstraction layer for Linux using I2C.  
<a href="#details">More...</a></p>
<div class="textblock"><code>#include &lt;linux/i2c-dev.h&gt;</code><br />
<code>#include &lt;unistd.h&gt;</code><br />
<code>#include &lt;sys/ioctl.h&gt;</code><br />
<code>#include &lt;sys/types.h&gt;</code><br />
<code>#include &lt;sys/stat.h&gt;</code><br />
<code>#include &lt;fcntl.h&gt;</code><br />
<code>#include &lt;errno.h&gt;</code><br />
<code>#include &lt;string.h&gt;</code><br />
<code>#include &lt;stdint.h&gt;</code><br />
<code>#include &lt;stdio.h&gt;</code><br />
<code>#include &lt;stdlib.h&gt;</code><br />
<code>#include &quot;<a class="el" href="a00368_source.html">atca_hal.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="a00416_source.html">hal_linux_i2c_userspace.h</a>&quot;</code><br />
</div><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:ga05700385437884cc7b28c38d33e84f8c"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00173.html#a22bd6643f31f1d75dc3e7ea939f468cd">ATCA_STATUS</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00993.html#ga05700385437884cc7b28c38d33e84f8c">hal_i2c_discover_buses</a> (int i2c_buses[], int max_buses)</td></tr>
<tr class="memdesc:ga05700385437884cc7b28c38d33e84f8c"><td class="mdescLeft">&#160;</td><td class="mdescRight">discover i2c buses available for this hardware this maintains a list of logical to physical bus mappings freeing the application of the prior knowledge  <a href="a00993.html#ga05700385437884cc7b28c38d33e84f8c">More...</a><br /></td></tr>
<tr class="separator:ga05700385437884cc7b28c38d33e84f8c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gac7644e62498a596c09952ee3b28017b9"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00173.html#a22bd6643f31f1d75dc3e7ea939f468cd">ATCA_STATUS</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00993.html#gac7644e62498a596c09952ee3b28017b9">hal_i2c_discover_devices</a> (int bus_num, <a class="el" href="a01013.html">ATCAIfaceCfg</a> cfg[], int *found)</td></tr>
<tr class="memdesc:gac7644e62498a596c09952ee3b28017b9"><td class="mdescLeft">&#160;</td><td class="mdescRight">discover any CryptoAuth devices on a given logical bus number  <a href="a00993.html#gac7644e62498a596c09952ee3b28017b9">More...</a><br /></td></tr>
<tr class="separator:gac7644e62498a596c09952ee3b28017b9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga09e7f465a040fbd19ea136269571de3c"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00173.html#a22bd6643f31f1d75dc3e7ea939f468cd">ATCA_STATUS</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00993.html#ga09e7f465a040fbd19ea136269571de3c">hal_i2c_init</a> (void *hal, <a class="el" href="a01013.html">ATCAIfaceCfg</a> *cfg)</td></tr>
<tr class="memdesc:ga09e7f465a040fbd19ea136269571de3c"><td class="mdescLeft">&#160;</td><td class="mdescRight">initialize an I2C interface using given config  <a href="a00993.html#ga09e7f465a040fbd19ea136269571de3c">More...</a><br /></td></tr>
<tr class="separator:ga09e7f465a040fbd19ea136269571de3c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gafbe53519362f18c2688d10da6f7c618f"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00173.html#a22bd6643f31f1d75dc3e7ea939f468cd">ATCA_STATUS</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00993.html#gafbe53519362f18c2688d10da6f7c618f">hal_i2c_post_init</a> (<a class="el" href="a00989.html#ga75c11126f3fe81df3d6c27f5bb393303">ATCAIface</a> iface)</td></tr>
<tr class="memdesc:gafbe53519362f18c2688d10da6f7c618f"><td class="mdescLeft">&#160;</td><td class="mdescRight">HAL implementation of I2C post init.  <a href="a00993.html#gafbe53519362f18c2688d10da6f7c618f">More...</a><br /></td></tr>
<tr class="separator:gafbe53519362f18c2688d10da6f7c618f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gacd0fb31f0f88ef3762665e26b5aa784b"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00173.html#a22bd6643f31f1d75dc3e7ea939f468cd">ATCA_STATUS</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00993.html#gacd0fb31f0f88ef3762665e26b5aa784b">hal_i2c_send</a> (<a class="el" href="a00989.html#ga75c11126f3fe81df3d6c27f5bb393303">ATCAIface</a> iface, uint8_t *txdata, int txlength)</td></tr>
<tr class="memdesc:gacd0fb31f0f88ef3762665e26b5aa784b"><td class="mdescLeft">&#160;</td><td class="mdescRight">HAL implementation of I2C send over ASF.  <a href="a00993.html#gacd0fb31f0f88ef3762665e26b5aa784b">More...</a><br /></td></tr>
<tr class="separator:gacd0fb31f0f88ef3762665e26b5aa784b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga7785bcc305c14e2dc188bb1b9a77814a"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00173.html#a22bd6643f31f1d75dc3e7ea939f468cd">ATCA_STATUS</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00993.html#ga7785bcc305c14e2dc188bb1b9a77814a">hal_i2c_receive</a> (<a class="el" href="a00989.html#ga75c11126f3fe81df3d6c27f5bb393303">ATCAIface</a> iface, uint8_t *rxdata, uint16_t *rxlength)</td></tr>
<tr class="memdesc:ga7785bcc305c14e2dc188bb1b9a77814a"><td class="mdescLeft">&#160;</td><td class="mdescRight">HAL implementation of I2C receive function for ASF I2C.  <a href="a00993.html#ga7785bcc305c14e2dc188bb1b9a77814a">More...</a><br /></td></tr>
<tr class="separator:ga7785bcc305c14e2dc188bb1b9a77814a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gab7f613b378e0d01b80703df3ac662d6d"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00993.html#gab7f613b378e0d01b80703df3ac662d6d">change_i2c_speed</a> (<a class="el" href="a00989.html#ga75c11126f3fe81df3d6c27f5bb393303">ATCAIface</a> iface, uint32_t <a class="el" href="a00993.html#ga218b4f7c6cc2681a99c23a3b089d68b1">speed</a>)</td></tr>
<tr class="memdesc:gab7f613b378e0d01b80703df3ac662d6d"><td class="mdescLeft">&#160;</td><td class="mdescRight">method to change the bus speed of I2C  <a href="a00993.html#gab7f613b378e0d01b80703df3ac662d6d">More...</a><br /></td></tr>
<tr class="separator:gab7f613b378e0d01b80703df3ac662d6d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gad4df1b6755e2d5b5d9e810371e45ca8c"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00173.html#a22bd6643f31f1d75dc3e7ea939f468cd">ATCA_STATUS</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00993.html#gad4df1b6755e2d5b5d9e810371e45ca8c">hal_i2c_wake</a> (<a class="el" href="a00989.html#ga75c11126f3fe81df3d6c27f5bb393303">ATCAIface</a> iface)</td></tr>
<tr class="memdesc:gad4df1b6755e2d5b5d9e810371e45ca8c"><td class="mdescLeft">&#160;</td><td class="mdescRight">wake up CryptoAuth device using I2C bus  <a href="a00993.html#gad4df1b6755e2d5b5d9e810371e45ca8c">More...</a><br /></td></tr>
<tr class="separator:gad4df1b6755e2d5b5d9e810371e45ca8c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga9317303ada721ff3f97e7aad69437a30"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00173.html#a22bd6643f31f1d75dc3e7ea939f468cd">ATCA_STATUS</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00993.html#ga9317303ada721ff3f97e7aad69437a30">hal_i2c_idle</a> (<a class="el" href="a00989.html#ga75c11126f3fe81df3d6c27f5bb393303">ATCAIface</a> iface)</td></tr>
<tr class="memdesc:ga9317303ada721ff3f97e7aad69437a30"><td class="mdescLeft">&#160;</td><td class="mdescRight">idle CryptoAuth device using I2C bus  <a href="a00993.html#ga9317303ada721ff3f97e7aad69437a30">More...</a><br /></td></tr>
<tr class="separator:ga9317303ada721ff3f97e7aad69437a30"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga3f89bae6a625d5f37abdcc99408def27"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00173.html#a22bd6643f31f1d75dc3e7ea939f468cd">ATCA_STATUS</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00993.html#ga3f89bae6a625d5f37abdcc99408def27">hal_i2c_sleep</a> (<a class="el" href="a00989.html#ga75c11126f3fe81df3d6c27f5bb393303">ATCAIface</a> iface)</td></tr>
<tr class="memdesc:ga3f89bae6a625d5f37abdcc99408def27"><td class="mdescLeft">&#160;</td><td class="mdescRight">sleep CryptoAuth device using I2C bus  <a href="a00993.html#ga3f89bae6a625d5f37abdcc99408def27">More...</a><br /></td></tr>
<tr class="separator:ga3f89bae6a625d5f37abdcc99408def27"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gac382cc4431d2d1c721c21a453ba36c22"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00173.html#a22bd6643f31f1d75dc3e7ea939f468cd">ATCA_STATUS</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00993.html#gac382cc4431d2d1c721c21a453ba36c22">hal_i2c_release</a> (void *hal_data)</td></tr>
<tr class="memdesc:gac382cc4431d2d1c721c21a453ba36c22"><td class="mdescLeft">&#160;</td><td class="mdescRight">manages reference count on given bus and releases resource if no more refences exist  <a href="a00993.html#gac382cc4431d2d1c721c21a453ba36c22">More...</a><br /></td></tr>
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Variables</h2></td></tr>
<tr class="memitem:ga95dac4460cd54b4b073285ebc79d215b"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00993.html#gae8f36006f14bf6a9f4914bac69ed9f98">ATCAI2CMaster_t</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00993.html#ga95dac4460cd54b4b073285ebc79d215b">i2c_hal_data</a> [<a class="el" href="a00539.html#af89a7a4080a47aa10a5504291db285bf">MAX_I2C_BUSES</a>]</td></tr>
<tr class="separator:ga95dac4460cd54b4b073285ebc79d215b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gaa7deec7f5d89dfb4f9746d050b0926f9"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00993.html#gaa7deec7f5d89dfb4f9746d050b0926f9">i2c_bus_ref_ct</a> = 0</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>ATCA Hardware abstraction layer for Linux using I2C. </p>
<dl class="section copyright"><dt>Copyright</dt><dd>(c) 2015-2018 Microchip Technology Inc. and its subsidiaries. </dd></dl>
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